84780339 has 32 divisors (see below), whose sum is σ = 134707200. Its totient is φ = 47388096.

The previous prime is 84780331. The next prime is 84780349. The reversal of 84780339 is 93308748.

It is not a de Polignac number, because 84780339 - 2³ = 84780331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84780339.

It is not an unprimeable number, because it can be changed into a prime (84780331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47487 + ... + 49239.

It is an arithmetic number, because the mean of its divisors is an integer number (4209600).

Almost surely, 2^84780339 is an apocalyptic number.

84780339 is a deficient number, since it is larger than the sum of its proper divisors (49926861).

84780339 is a wasteful number, since it uses less digits than its factorization.

84780339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 84780339 is about 9207.6239606100. The cubic root of 84780339 is about 439.3038906806.

The spelling of 84780339 in words is "eighty-four million, seven hundred eighty thousand, three hundred thirty-nine".